Let-off and take-up mechanism for looms.



. No. 727,533. PATENTED" MAY-5, 190s.

, H. A. BOND. I LET-OFF AND TAKE-UP MECHANISM FOR LOOMS.

APPLIUATIQN EILED JAN. 16, 1902. K0 MODEL.

3 SHEETS-SHEET 1.

No. 727,533. I PATENTBD MAYS, 1903.

H. BOND. LET-OFF AND TAKE-UP MECHANISM FOR LOOMS.

APPLICATION F ILED JAN. 16, 1902.

N0 MODEL. 3 SHEETS-SHEETZ.

PATENTEDYMAY 51903.

. H. A. BONDJ LET-OPP AND TAKE-UP MECHANISM FOR LOOMS.

APPLICATION FILED JAN. 16, 1902.

s s'HBETs-BHBBT a.

r N0 MODEL.

Jun- I mime STATES Patented May 5, 1903.

ATENT OFFICE.

HIRAM A. BOND, OF \VEST SPRINGFIELD, MASSACHUSETTS, ASSIGNOR, BY IWIESNEASSIGNMENTS, TO THE NATIONALLOOM AND WIRE COMPANY, INCORPORATED, OFSPRINGFIELD, MASSACHUSETTS, A CORPORATION OF CONNECTICUT.

LET-OFF AND TAKE-UP MECHANISM FOR LOOMS.

SPECIFICATION formingpart of Letters Patent 0. 727,533, dated May 5,1903. Application filed January 16,1902. Serial No. 89,974. (No model.)

To all whom, it may concern.-

Be it known that I, HIRAM A. BOND, a citizen of the United States ofAmerica, and a resident of W'est Springfield, in the county of llampdenand State of Massachusettsmave invented certain new and usefulImprovements in Let-Off and Take-Up Mechanism for Looms, of which thefollowing is a full, clear, and exact description.

This invention is for improvement in looms, and more particularly loomsfor the weaving of wire-cloth, such as extensively used in Fourdrinierpapermachines and for other purposes.

The improvements specifically relate to the let-off and take-upmechanism.

An object of the invention. is to provide a new and improved mechanismcontrolling both the let-off and take-up concurrently which is verypositive and reliable in its operation and which is susceptible by thesubstitution for one of the parts comprised therein of another part ofslightly-changed size and character of varying the extent of let-off andtake-up, whereby to accord with the dif ferenoes in the desired finenessor coarseness of the mesh of the wire-cloth to be woven in the loom.

Another object is to so form and combine the actuating mechanism for thelet-off and the take-up that the warp-beam or the takeup roller, orboth, may be rotated either independently of each other and of theoperating mechanism or both concurrently with each other and stillindependently of and Without obstruction by the operating mechanismtherefor.

Another object is to provide that in the building up of the roll ofcloth as made on the take-up beam the increased size of the roll willnot operate to strain the warps or interfere with the proper operationof the loom.

Another object of the invention is'to generally improve, simplify, andcheapen the construction of the loom and render the same capable ofprotracted use'withont liability of derangement.

To these ends the invention consists in the constructions andcombination or arrangement of partsor instrumentalities, allsubstantially as hereinafter described, in conjunction with theaccompanying drawings and as coveredin and by the claims.

In the drawings, Figure l is a side elevation of theloom equipped withthe present improvements, a portion of the side frame being indicated asbroken away for clearer illustration of some of the parts contributingto the novel mechanism. Fig. 2 is a.plan view of the 100m, anuprerportion of the framing being understood as carried away on a plane whichis just above the level of the warp and take-up beams. Fig. 3 is alongitudinal sectional view through the take-up beam, showing itsslipping connection 011 the warp-beam shaft. Fig. 4 is an end view andpartial section of the warp-beam.

Similar characters'of reference indicate corresponding parts in all ofthe views.

In the drawings A represents the framing of the machine indicated asbeing of the same general design as commonly employed for wire looms.

B represents the warp-beam, having its arbor journaled horizontally inboxes to a at one end of theloom, and C is the take-up roll similarlyhorizontally mounted at the other end of the'loomJ D is the main ordriving shaft.

Erepresents the lay, pivotally mounted and suspended, having the reed atits lower portion.

E represents the duplicated cam-lever, engaging the cams E in anordinary manner, whereby the reciprocatory swinging motions are impartedto the said levers E E and from them through the connecting-bar d to thelay. V V

F F-represent the harnesses, arranged for alternately rising andlowering motions as imparted to them by the levers E E interm ediatelypivotally mounted and actuated by the cam-rollers e c ontheregularly-rotating and prope'rly-speeded shaft A in the loom.

Both the extended end portions of the shafts or arbors of the warp-beamB and the takeup roll C have detachably aflixed thereon by of saiddriving-shaft.

the set-screws ff the worm-wheels G and H, meshing in which are theworms g and h, which are carried, preferably detachably, at the oppositeends of the long shaft J, which ranges nearly horizontally along theouter side of the machine-frame, one of the worms having its gearingengagement with the worm-wheel G beneath the latter, while the other hasits engagement with the wormwheel H above the latter, so thattherotation of the shaft J'will cause rotational movement of the let-offwarp-beam and the take up roll in the same direction as manifestlyrequisite.

There is comprised between the drivingshaft A and the shaft J, having incommon driving connection with both the warp-beam and the take-uproller, a medium of speedreducing connection, which comprises there inmeans or provision whereby the degree of reduction of the speed andconsequent extent of movement in each operation of the loom may bevaried in percentage or proportion.

While the speed-reducing and variable connection may be somewhatmodified from that here shown without departing from this invention, Iwill particularly describe the one shown.

The shaft A by gearing is rotated from driving-shaft A once in every tworotations Suitably adjacent the said shaft A is a short shaft 70,parallel therewith, having removably mounted thereon a ratchet-wheel m,with which coacts a pawl n, carried atvthe extremity of a pawlcarryinglever 0, one end portion of which is hung for a swinging motion on thesame shaft .70 as that on which the said ratchet-wheel is removablyaffixed. The swinging reciprocatory motion of the pawl-carrying leverovis imparted by the swinging lever Z, which byalink Z is connected tothe pawl-carrying lever. 0, and the reciprocatory motions of this leverZ are imparted thereto in the one direction by the adjustable cams Zwhich are carried by the disk or rotary holder Z and which cams i'mpingeagainst the lever Z one thereof at every half-rotation of shaft A whichcorresponds toacomplete rotation of the main shaft and to completeoperations of the harnesses and lay. The spring Z retracts the lever Zin pawlcarrier 0. The adjustable cams Z are fitted in radial grooves inthe disk Z being secured with greater or less radial extension by meansof the bolt and slot connections indicated in Fig. 1. On the shaft is isa small spur gear-wheel 15, which meshes into the larger gear-wheel 16on a shaft 19, which is parallel with the one 70, said shaft 19 havingalso thereon a spur gear-wheel 17, which is smaller than the one 16 andin turn meshing into the larger spur gear-wheel 18 on the horizontalshaft q, which is parallel with shafts p and k. The said shaft g has onits end outside of the frame the bevel-gear 19, of comparatively smalldiameter, which meshes with the larger bevel gear-wheel 20, affixed onthe longitudinally-extending worm-shaft J, having wormgearingconnection, as aforementioned, with the warp-beam and take-up roll. Thesaid shafts 70, p, and q have journal-bearings at their one end in .1 hemember 0 of a frame L, of a form to embrace three sides of a rectangleand which is bolted to the inner side of the said framing A of themachine, and the gearing 15, 16, 17, and 18 is inclosed within thisframe or'rigid'metal strap, and the other ends of the said shafts k 19 qare journaled in the adjacent portion of the side frame A. The motionprimarily imparted to the main shaft will, through the connectionscomprising the reducing-gearing, the ratchet-wheel, and theratchet-wheel-actuating mechanism, impart a very slow rotational motionto the warpbeam and the take-up roll proportionately more or less,according to the length of the teeth on the ratchet-wheel or the lengthof thrust of the pawl, and for establishing the conditions for let-0Hand take-up where the loom is being employed for a finer or a,

coarser wire fabric the ratchet-wheel may be substituted by anotherhaving correspondingly finer or coarser teeth, and the actuatingconnections of the pawl-carrier will be correspondingly adjusted for thepawl to have its proper throw to carry around the ratchetwheel an extentequal to one of its teeth ora multiple thereof. By disconnecting thewormgearing G g or H h either by removing or displacing the worms or theworm-wheels the warp-beam and the take-up roll are left free forindependent rotations to enable beaming on new warp-wires or the takingofi of the finished fabric.

The take-up beam 0, as shown in Fig. 3, is mounted loosely on its shaftor arbor H and the beam has at one end a flanged or cupshaped shell 25,within the inner surface of which are arc-shaped friction-shoes u,having central radial perforations a and a collar v is affixed on theadjacent end portion of the take-up-beam shaft, the same having itsradial studs 0 extended for a sliding fit Within the perforations of thefriction-shoes. The said radial studs are screw-threaded, as shown at o,within their extremities, receiving thereon the nuts '0 whichconstitute adjustable stops or shoulders for the spiral springs w, whichare between such stops and the shoes encircling the studs. By changingthe position of the nuts the shoes may grip the beam to its shaft with agreater or less forcible degree of yielding engagement, and hence thediameter of the take-up beam and the woven cloth thereon becomingconstantly variable in the progress of the operation of the loom iscompensated for by the yielding of the beam on its shaft when thepredetermined maximum of strain on the warps shall have been reached.

Having thus described my invention, what I claim, and desire to secureby Letters Pat out, is-

1. In a'let-oif and take-up mechanism for looms, in combination, thewarp-beam and the take-up beam having worm-wheels on their shafts, and ashaft extending from adjacent the shaft of the one to adjacent the shaftof the other, and having Worms gearing with said worm-wheels of saidshafts, a drivingshaft and a secondary shaft having a ratchetwheelthereon, a pawl-carrying arm pivotally hung having a pawl coacting withsaid ratchetwheel, reducing-gearing connected with and between theratchet shaft and the wormshaft, a rotary disk, primarilydriven from themain shaft, having one or more radially-ad justable cams, a lever linkedto the pawl-carrying arm, with which said cams engage, and means forretracting the lever.

2. In a let-off and take-up mechanism for looms, the combination withthe Warp-beam and the take-up beam, having worm-wheels on their shafts,and a shaft extending from adjacent the shaft of the one beam toadjacent the shaft of the other, having worms in gear with theworm-wheels on the beam-shaft, and a driving-shaft, of a shaft 7c havinga ratchetwheel thereon, and a pinion-wheel15, further shafts p and (1having speed-reducing gearing and the latter one of the series having anextension adjacent the worm-shaft, and provided with a bevel gear-wheel19 in mesh with a gear-wheel 20, which is affixed to the Wormshaft, thepawl-carrier 0 and pawl n engaging 1 the ratchet-wheel, a shaft indriving connection with the main shaft having the disk Z provided-withthe radially-adjustable cam and a lever Z linked to the pawl-carrier,and located to be impinged against by said cams, to be operated therebyand the retractingspring Z substantially as described.

3. In a device of the character described, the combination of a take-upbeam, a shaft on which the beam is loosely mounted, the beam havingacup-shaped end,shoes arranged to rotate with the shaft, and springsarranged to press the shoes against the inner periphery of thecup-shaped end.

4. In a device of the character described, the combination of a take-upbeam, a shaft on which the beam is loosely mounted, the beam having acup-shaped end, a collar secured on said shaft and having radial studs,nuts engaging said studs, friction-shoes having apertures engaging thesaid studs, and spiral springs encircling the studs and hearing on thenuts and the shoes, and arranged to force the shoes against the innerperiphery of the cup-shaped end.

Signed by me at Springfield, Massachusetts, this 11th day of January,1902.

HIRAM A. BOND.

Witnesses:

O. S. GREENLEAF, WM. S. BELLOWS.

